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Activity of the Rotator Cuff During Glenohumeral Mobilization

NCT02491489 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 20

Last updated 2018-07-19

No results posted yet for this study

Summary

Shoulder pain is one of the most common musculoskeletal conditions treated by physical therapists. One common treatment is passive glenohumeral joint accessory mobilization, which is the application of a therapist generated force to move the humeral head (ball) on the glenoid (socket) of the shoulder to improve motion and decrease pain. It is generally accepted that these mobilizations do not elicit active muscular contractions of the surrounding musculature. However, there is very little literature to support this assumption, and a preliminary PubMed search utilizing the terms "shoulder"," mobilization", and "EMG" returned zero relevant references. Therefore, the investigators plan to utilize surface electromyography (EMG), a non-invasive assessment tool, to objectively measure the activity of the rotator cuff muscles (the muscles that surround the shoulder and provide stability to the joint) during various grades(levels of force and amplitude of movement) of glenohumeral mobilization ( a standard of care treatment). It is also unknown if subjects pain levels impact the level of rotator cuff activity. To investigate these questions, the investigators will collect EMG data while performing mobilizations on a total of 20 subjects, divided into two groups: 10 pain free shoulders and 10 painful shoulders. Data analysis will then include descriptive analysis, estimates of effect size, and analysis for between group differences.

The investigators hypothesize that there will be significant differences in muscular activity between groups related to the presence of shoulder pain.

Conditions

  • Shoulder Pain

Interventions

OTHER

Glenohumeral mobilization

Participants will then be placed supine on a standard plinth. The investigators will then proceed to provide a mobilizing force to the participant's glenohumeral joints. Each of two investigators will, in sequence perform a 15 second longitudinal distraction, followed by a 15 second posteriorly directed glenohumeral glide with the shoulder placed in the open pack resting position (\~50 degrees abduction, slight horizontal adduction, external rotation).

Sponsors & Collaborators

  • Texas Woman's University

    lead OTHER

Study Design

Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
64 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2015-03-31
Primary Completion
2015-05-31
Completion
2015-05-31

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02491489 on ClinicalTrials.gov